[CW] PARIS vs CODEX (or CODEZ) Code Speeds

[D.J.J. Ring, Jr.]

PARIS was chosen because the ITU conference was held in (wait for it),
PARIS.  PARIS was defined as a word having 50 "dot units" or baud.  So it
became the  speed standard.  10 WPM was the speed that resulted when  PARIS
was sent 10 times in a minute.  It was the average length of a word in
English.

Code  groups are random so their speed is different than English, which is
"faster" because Morse was designed for English, the common  letters are
short Morse characters, E the most common, T the second most common, etc.

CODEZ or CODEX (same baud) is 60 dot units or 60 baud. So you can see that
the same dots and dashes (speed setting of the key) will send 20 wpm but
only 50/60 groups per minute or about 16 gpm.  Thus the test for the
Telegraph license is 20 wpm and 16 gpm (groups per minute).

73

DR
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